Half of labor is all in your mind. Relax and try not to be anxious. Anxiety produces adrenaline and that can actually slow things down. Sex is recommended because the hormone in ejaculate is oxytocin. Oxytocin softens your cervix. Orgasm causes contractions.
Walking does work, it ***** and it's painful, but it works! Take some tylenol and walk as long as you can. Good luck!